Gage-cock.



No. 865,535. PATENTTD SEPT. 1o, 1907.

- J. G. sAXB.

GAGE 000K.

APPLICATION FILED APR.19. 1906.

e llz mllllll una l l I UNITED STATES PATENT oFFien.

JOHN G. SAXE, OF PORT HURON, MICHIGAN, ASSIGNOR OF ONE-HALF TO ROBERT J.CLOSE, OF PORT I-IURON, MICHIGAN.

GAGE-COCK.

Speciieation of Letters 15e/tent.

Patented Sept. 10, 1907.

Application filed April 19.1906. Serial No. 312,703.

To all vwhom it may concern:

Bc it known that I, JOHN G. SAxn, a citizen of the United States ofAmerica, residing at Port Huron, in the county of St. Clair and State ofMichigan, have invented certain new and useful Improvements inGage-Cocks, of which the following is a specification,

reference being had therein to the accompanying' drawings.

The invention relates particularly to a gage cock for ste-ani boilersand consists in the novel and peculiar construction of the device, andin the arrangement and combination of its parts as more fullyhereinafter set forth. i

In the drawings illustrating the invention, Figure l is a sectional Viewthrough the gage cock, with the plungerl partly in elevation; Fig. 2 isa view in side elevation taken at right angles to Fig. I.

In the drawings thus brieHy described, A represents the casing havingoppositely-disposed openings a b formed in its ends, and an inlet cintermediate the openings provided with a threaded nipple d adapted tobe inserted in the boiler.

Within the openings described is placed packing material of any suitablecharacter, designated by the reference-letter f, which is held in placeby suitable glands g lz. [itting within the openings, as shown in Fig.I. To secure the desired tightness of packing, the inner ends of theopenings a, b, are tapered and the inner ends of the glands g, L, areprovided with tapered recesses, as shown in Fig. l. Also to provide forthe reception of the requisite amount of packing material andsufliciently large glands and still retain the comparatively small sizeof casing, I contract the inlet c between the openings a, b, as clearlyshown in Fig. l.

Arranged within the casing and extending through and beyond the packingmaterial and glands is a plunger B, having a chamber o/ thereinextending through one end forming a discharge passage. The plungerterminates at its upper end in a head C, and carries at its lower end atubular nut D, which forms a stop limiting its upward movement and alsoforms a nozzle for said discharge passage.

E is an inlet port leading to the discharge passage in the plunger andadapted upon movement of the latter to establish communication betweenthe interior of the casing and the outside atmosphere.

Interposed between the head C and the end of the gland e is a spiralspring F which holds the plunger in its upward position, with its inletport E Within the packing and normally out of communication withthecasing inlet.

An operating member, preferably in the form of a returned to its initialposition by hand.

handle or lever, as G, is employed for reciprocating the plunger,pivoted to a support IIcast integral preierably with a clamping ring I,which engages the upper portion of the casing and is held againstlongitudinal movement by a shoulder t'. j represents a bolt or othersuitable securing device for holding the clamping ring in properengagement with the casing and to permit of horizontal adjustment. Thelever described extends from the arm or support H transversely of theplunger and engages a slot c formed in the plunger head, the lever beingheld from displacement by a pin, as l, extending through the urcationsm.

VIn practice, the gage cock is applied to the boiler in the usualmanner, the plunger inlet being normally out oi communication with thecasing interior. Upon the depression of the lever the plunger movesdownwardly until its inlet port passes beyond the packing and intocommunication with the interior of the cas-` ing, when the steam fromthe inlet enters the plunger and is discharged therefrom through itslower end.

By reason of the spiral spring, the return of the plunger to its initialand inoperative position is automatically effected, or, if desired, thespring may be dispensed with and the upward movement of the plungereffected through its detachable connection with the operating lever. Inpractice, both the spring and the detachable connection referred to isemployed7 as in the event that the spring becomes worn and ineffectivethe plunger can still be readily The detachable connection afford meanswhereby the parts may be disconnected to permit of the removal of theplunger for the purpose of cleansing or re-packing.

Attention is especially directed to the fact that by reason of thepeculiar arrangement of the parts the steam pressure upon the plunger isuniform, enabling the latter to be operated in one direction as well asthe other without the necessity of overcoming the steam pressure;furthermore, the' plunger` working within the stuffing-boxes dispensesentirely with the necessity of a valve-seat, thus simplifying theconstruction and eliminating the possibility of escape of steam byreason of the dirt accumulating on the seat and preventing the valvefrom properly closing.

The extent of reciprocation of the plunger may be regulated' to a nicetyby means of the stop-nut D, While the construction of the entire deviceis such that the boxes may be easily and readily re-packed whennecessary` What I claim as my invention is,-

In a gage cock, the combination with a casing having between saidtransverse passages, of annular packingto Seat against the other glandand rotatably adjustable 10 glands in said transverse passages, and atubular valve ine-ans for operating said Valve.

extending through said glands and opposed passages and ln testimonywhereof I affix my signature in presence of having an inlet openingarranged to be registered with the two witnesses.

restricted portion of said inlet passage, a rigid stop on one end ofsaid valve, a spring sleeved on said valve and having its opposite endsbearing against said stop and one Witnesses;

of said glands, a removable tubular stop for the other HUGH Il. HART,end of said valve forming an outlet nozzle and arranged NmLLIi-i M.SHAW,

JOHN G. SAXE.

